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Fix emitting parenthesis when downlevel

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This commit is contained in:
Yui T 2015-10-05 18:57:11 -07:00
parent 7b3de842a0
commit 80cdfd4187
1 changed files with 8 additions and 2 deletions
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10
src/compiler/emitter.ts
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@ -2508,7 +2508,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
}
/**
* Emit exponentiation operator down-level using Math.pow
* Emit ES7 exponentiation operator downlevel using Math.pow
* @param node {BinaryExpression} a binary expression node containing exponentiationOperator (**, **=)
*/
function emitExponentiationOperator(node: BinaryExpression) {
@ -2516,12 +2516,15 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
if (node.operatorToken.kind === SyntaxKind.AsteriskAsteriskEqualsToken) {
let synthesizedLHS: ElementAccessExpression | PropertyAccessExpression;
// TODO (yuisu) : comment
let shouldEmitParenthesis = node.parent.kind === SyntaxKind.VariableDeclaration || node.parent.kind === SyntaxKind.BinaryExpression;
let shouldEmitParenthesis = false;
if (isElementAccessExpression(leftHandSideExpression)) {
shouldEmitParenthesis = node.parent.kind === SyntaxKind.VariableDeclaration || node.parent.kind === SyntaxKind.BinaryExpression;
if (shouldEmitParenthesis) {
write("(");
}
synthesizedLHS = <ElementAccessExpression>createSynthesizedNode(SyntaxKind.ElementAccessExpression, /*startsOnNewLine*/ false);
let tempExpression = createAndRecordTempVariable(TempFlags.Auto);
emitAssignment(tempExpression, leftHandSideExpression.expression, /*shouldEmitCommaBeforeAssignment*/ false);
@ -2539,9 +2542,12 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
write(", ");
}
else if (isPropertyAccessExpression(leftHandSideExpression)) {
shouldEmitParenthesis = node.parent.kind === SyntaxKind.VariableDeclaration || node.parent.kind === SyntaxKind.BinaryExpression;
if (shouldEmitParenthesis) {
write("(");
}
synthesizedLHS = <PropertyAccessExpression>createSynthesizedNode(SyntaxKind.PropertyAccessExpression, /*startsOnNewLine*/ false);
let tempExpression = createAndRecordTempVariable(TempFlags.Auto);
synthesizedLHS.expression = tempExpression